Thought of this while in the shower.

Much in the same way that modders can make mobs via the JSON framework, what if custom status effects could also be implemented? Taking a page from the transformations, I pitch this idea. 

Modders can customise these status effects with sprites, twisting the player character's proportions, etc. Similarly to the pre-existing status effects, mobs can also react with dialogue to each status effect, depending on the identifying name given (will evidently not work if no status effect has been loaded into the game with that name). They could be triggered via traps or mobs.

There could be various types of status effects, and these are some I came up with:

• Immobilising: you cannot move while afflicted. Wears off on its own.
• Disarming: you can move, but not use any attacks.
• Entrapment: you cannot  move while afflicted and must struggle out of it.

Additionally, status effects could have miscellaneous debuffs attached (damage over time, slowness, increased enemy speed). Perhaps most devious of all that I thought of, what if you could only clear a debuff after eating an enemy?

That is all.